Redstone, Matador, Bomarc launch complex. This complex was built to support the Bomarc interceptor missile program, but also supported Bumper, Jason, Redstone, X-17 and Polaris ballistic missile operations. The Air Force accepted Complex 4 in 1952. Following the last Bomarc launch in April 1960, some Bomarc support facilities were converted into a medical support area for Project Mercury. Later the complex supported tethered aerostat programs from 1983 through 1989.